"Holy Wisdom" overlooks the city that became its namesake.

This 20th-century replica of a 13th-century castle has itself fallen into ruin.

A 168-foot tower, part of the abandoned Chester Leadworks facility.

Even though some of the buildings date back to the Victorian era, this research institute is still involved in cutting-edge astronomy research.

The construction of this bridge dates back to the 15th century.

A hunk of prehistoric lava rests amid the Gothic architecture of a campus quad.

A roadway designed for a visiting monarch.

A quartet of brightly colored mythical beasts stand sentry at this gateway.

This mundane post marks the old location of the city's main postal hub.

The colorful stairs are made with marble from the world's major quarries.

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

A succession of eerily contemplative iron figures lead from a Scottish museum to the sea.

A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

A 18th century graveyard and its astonishing cortege of macabre iconography.

A brother statue swap has adorned this building's facade for centuries.

These spartan apartments are provided to clergymen visiting Vatican City.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

A mysterious Castle is now home to a rare breed of goat.

This emblematic representation is said to bring the students good fortune.

The 18th-century inspiration behind Harry Potter's Sorting Hat.

Believed to be an execution site used by King Arthur after he was embarrassed.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

A herd of half-sized cow sculptures has stood in this part for nearly 50 years.